CVE-2020-25657
First published: Tue Oct 20 2020(Updated: )
A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| M2crypto Project M2crypto | ||
| Redhat Virtualization | =4.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Fedoraproject Fedora | =33 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1889823
- https://gitlab.com/m2crypto/m2crypto/-/issues/285
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1898305
- https://access.redhat.com/errata/RHSA-2021:1169
- https://access.redhat.com/security/cve/cve-2020-25657
- https://gitlab.com/m2crypto/m2crypto/-/merge_requests/273
- https://www.cve.org/CVERecord?id=CVE-2020-25657 https://nvd.nist.gov/vuln/detail/CVE-2020-25657
Frequently Asked Questions
What is CVE-2020-25657?
CVE-2020-25657 is a vulnerability in all released versions of m2crypto that makes them vulnerable to Bleichenbacher timing attacks in the RSA decryption API.
How does CVE-2020-25657 affect the affected software?
CVE-2020-25657 can lead to the compromise of confidentiality in the affected software.
What is the severity of CVE-2020-25657?
The severity of CVE-2020-25657 is high, with a CVSS base score of 7.5.
How can I fix the CVE-2020-25657 vulnerability in m2crypto?
Update to the latest version of m2crypto or apply the patches provided by the vendor.
Where can I find more information about CVE-2020-25657?
You can find more information about CVE-2020-25657 on the CVE website (https://www.cve.org/CVERecord?id=CVE-2020-25657) and the NIST National Vulnerability Database (https://nvd.nist.gov/vuln/detail/CVE-2020-25657).
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